.zh-md-wrapper{--primary:#2563eb;--primary-hover:#1d4ed8;--bg-card:#fff;--bg-soft:#f8fafc;--bg-muted:#f1f5f9;--border:#e2e8f0;--text-main:#0f172a;--text-muted:#64748b;--success:#16a34a;--danger:#dc2626;--focus-ring:rgba(37,99,235,0.14);width:100%;margin:0 auto;color:var(--text-main);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}.zh-md-grid{display:grid;grid-template-columns:minmax(280px,340px) minmax(0,1fr);gap:24px;align-items:start;transition:grid-template-columns 0.22s ease}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-grid{grid-template-columns:58px minmax(0,1fr)}.zh-md-card{background:var(--bg-card);padding:24px;border-radius:10px;border:1px solid var(--border);box-shadow:0 4px 6px -1px rgba(15,23,42,0.05);box-sizing:border-box}.zh-md-card>h2{font-size:1.25rem;line-height:1.35;margin:0 0 15px;color:#1e293b;padding-bottom:10px;border-bottom:1px solid var(--border)}.zh-md-help{margin:-4px 0 16px;color:var(--text-muted);font-size:13px;line-height:1.55}.zh-md-sticky{position:sticky;top:50px;align-self:start;max-height:calc(100vh - 70px);overflow-y:auto}.zh-md-form-group{margin-bottom:16px}.zh-md-form-group>label,.zh-md-label{display:block;font-weight:600;font-size:0.85rem;margin-bottom:6px;color:#475569}.zh-md-wrapper select,.zh-md-wrapper input[type="text"],.zh-md-wrapper textarea{width:100%;padding:9px 10px;border:1px solid var(--border);border-radius:6px;box-sizing:border-box;font-family:inherit;font-size:13px;line-height:1.45;background:#fff;color:var(--text-main);transition:border-color 0.2s,box-shadow 0.2s}.zh-md-wrapper textarea{resize:vertical;font-family:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace}.zh-md-wrapper #zh-md-source{min-height:520px;max-height:none;overflow:hidden}.zh-md-wrapper select:focus,.zh-md-wrapper input[type="text"]:focus,.zh-md-wrapper textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px var(--focus-ring)}.zh-md-actions,.zh-md-toolbar,.zh-md-export-actions,.zh-md-settings-actions{display:flex;flex-wrap:wrap;gap:8px}.zh-md-actions{margin-top:18px}.zh-md-toolbar{margin-bottom:12px}.zh-md-btn,.zh-md-tool-btn{border:1px solid var(--border);border-radius:6px;background:#fff;color:#334155;cursor:pointer;font-weight:700;font-size:12px;line-height:1.25;padding:9px 10px;transition:background 0.2s,border-color 0.2s,color 0.2s}.zh-md-tool-btn{min-width:38px;padding:8px 9px}.zh-md-btn:hover,.zh-md-tool-btn:hover{border-color:var(--primary);color:var(--primary)}.zh-md-primary{background:var(--primary);border-color:var(--primary);color:#fff}.zh-md-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:#fff}.zh-md-checkbox{display:flex;align-items:flex-start;gap:8px;margin-bottom:10px}.zh-md-checkbox input{width:16px;height:16px;cursor:pointer;margin:2px 0 0;flex:0 0 auto}.zh-md-checkbox label{margin:0;cursor:pointer;font-size:13px;line-height:1.45;color:#334155}.zh-md-note{border:1px solid #bfdbfe;background:#eff6ff;color:#1e40af;border-radius:8px;padding:10px 12px;font-size:12px;line-height:1.5;margin-top:12px}details.zh-md-saved-settings{background:var(--bg-soft);border:1px solid var(--border);border-radius:8px;margin-top:16px;overflow:hidden}.zh-md-settings-card{position:sticky;top:50px;align-self:start;max-height:calc(100vh - 70px);overflow-y:auto;transition:padding 0.22s ease}.zh-md-settings-header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 15px;padding-bottom:10px;border-bottom:1px solid var(--border)}.zh-md-settings-title{font-size:1.25rem;line-height:1.35;margin:0;color:#1e293b;font-weight:700}.zh-md-settings-toggle{flex:0 0 auto;border:1px solid var(--border);border-radius:999px;background:var(--bg-soft);color:var(--text-muted);cursor:pointer;font-size:12px;font-weight:700;line-height:1;padding:7px 10px;transition:background 0.2s,border-color 0.2s,color 0.2s}.zh-md-settings-toggle:hover{border-color:var(--primary);background:#eff6ff;color:var(--primary)}.zh-md-settings-panel-body{display:block}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-settings-card{padding:10px 8px;overflow:visible}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-settings-header{flex-direction:column;justify-content:flex-start;gap:10px;margin:0;padding:0;border-bottom:0}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-settings-title{writing-mode:vertical-rl;transform:rotate(180deg);white-space:nowrap;font-size:13px;line-height:1.2}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-settings-toggle{width:38px;padding:8px 0}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-settings-panel-body{display:none}details.zh-md-saved-settings summary{font-weight:700;font-size:0.9rem;padding:12px 14px;cursor:pointer;background:var(--bg-muted);color:#334155;user-select:none}.zh-md-saved-inner{padding:14px}.zh-md-saved-help{margin:0 0 12px;color:var(--text-muted);font-size:12px;line-height:1.5}.zh-md-settings-json{min-height:92px;margin-top:10px;font-size:12px}.zh-md-settings-status,.zh-md-status{min-height:18px;margin-top:8px;font-size:12px;color:var(--text-muted)}.zh-md-settings-status.is-success,.zh-md-status.is-success{color:var(--success)}.zh-md-settings-status.is-error,.zh-md-status.is-error{color:var(--danger)}.zh-md-editor-card{grid-column:2}.zh-md-editor-shell{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:start}.zh-md-panel{min-width:0}.zh-md-panel-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px}.zh-md-panel-actions{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}.zh-md-panel-head h3{font-size:0.95rem;margin:0;color:#1e293b}.zh-md-preview{min-height:520px;max-height:none;overflow:visible;border:1px solid var(--border);border-radius:6px;padding:18px;background:#fff;box-sizing:border-box;line-height:1.65;font-size:15px;color:var(--text-main)}.zh-md-editor-card.zh-md-sticky{position:static;max-height:none;overflow:visible}.zh-md-preview.is-compact{font-size:14px;line-height:1.5}.zh-md-preview h1,.zh-md-preview h2,.zh-md-preview h3,.zh-md-preview h4,.zh-md-preview h5,.zh-md-preview h6{margin:1.15em 0 0.45em;line-height:1.25;color:#0f172a}.zh-md-preview h1{font-size:1.9em}.zh-md-preview h2{font-size:1.5em;border-bottom:1px solid var(--border);padding-bottom:0.25em}.zh-md-preview h3{font-size:1.25em}.zh-md-preview p,.zh-md-preview ul,.zh-md-preview ol,.zh-md-preview blockquote,.zh-md-preview table,.zh-md-preview pre{margin:0 0 1em}.zh-md-preview blockquote{border-left:4px solid #cbd5e1;padding:0.2em 0 0.2em 1em;color:#475569;background:#f8fafc}.zh-md-preview code{background:#f1f5f9;padding:0.15em 0.35em;border-radius:4px;font-family:ui-monospace,SFMono-Regular,Consolas,"Liberation 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.zh-md-grid{grid-template-columns:1fr}.zh-md-settings-card{order:2;position:static;max-height:none;overflow:visible}.zh-md-settings-toggle{display:none}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-settings-card{padding:24px}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-settings-header{flex-direction:row;justify-content:space-between;gap:12px;margin:0 0 15px;padding-bottom:10px;border-bottom:1px solid var(--border)}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-settings-title{writing-mode:horizontal-tb;transform:none;white-space:normal;font-size:1.25rem;line-height:1.35}.zh-md-wrapper.zh-md-settings-collapsed .zh-md-settings-panel-body{display:block}.zh-md-editor-card{display:contents}.zh-md-editor-title{display:none}.zh-md-input-panel{order:1;background:var(--bg-card);padding:24px;border-radius:10px;border:1px solid var(--border);box-shadow:0 4px 6px -1px rgba(15,23,42,0.05);box-sizing:border-box}.zh-md-preview-panel{order:3;background:var(--bg-card);padding:24px;border-radius:10px;border:1px solid var(--border);box-shadow:0 4px 6px -1px rgba(15,23,42,0.05);box-sizing:border-box}.zh-md-sticky{position:static;max-height:none;overflow:visible}.zh-md-preview,.zh-md-wrapper textarea{min-height:360px;max-height:none}.zh-md-meta{grid-template-columns:1fr 1fr}}@media (max-width:560px){.zh-md-card,.zh-md-input-panel,.zh-md-preview-panel{padding:18px}.zh-md-meta{grid-template-columns:1fr}}<style>.zh-faq-section{display:block;width:100%;max-width:none;margin:56px 0 0;padding:0;box-sizing:border-box;flex:0 0 auto;align-self:stretch;color:#0f172a}section.zh-faq-section{align-self:center}.zh-faq-inner{width:100%;max-width:860px;margin:0 auto;padding:0 20px;box-sizing:border-box}.zh-faq-section h2{margin:0 0 14px;font-size:1.75rem;line-height:1.25;color:#0f172a}.zh-faq-intro{margin:0 0 22px;color:#64748b;font-size:15px;line-height:1.7}.zh-faq-list{display:grid;grid-template-columns:minmax(0,1fr);align-items:stretch;gap:12px;width:100%}.zh-faq-item{display:block;width:100%;min-width:0;box-sizing:border-box;border:1px solid #e2e8f0;border-radius:8px;background:#fff;overflow:hidden}.zh-faq-item summary{position:relative;display:block;width:100%;box-sizing:border-box;cursor:pointer;list-style:none;list-style-type:none;appearance:none;-webkit-appearance:none;padding:16px 48px 16px 18px;font-size:15px;font-weight:700;line-height:1.45;color:#0f172a}.zh-faq-item summary::marker{content:"";display:none}.zh-faq-item summary::-webkit-details-marker{display:none}.zh-faq-item summary::after{content:"+";position:absolute;top:50%;right:18px;transform:translateY(-50%);width:24px;height:24px;border-radius:999px;background:#eff6ff;color:#2563eb;display:grid;place-items:center;font-size:18px;line-height:1;font-weight:700}.zh-faq-item[open] summary{border-bottom:1px solid #e2e8f0}.zh-faq-item[open] summary::after{content:"-"}.zh-faq-answer{padding:16px 18px 18px;color:#475569;font-size:15px;line-height:1.75}.zh-faq-answer p{margin:0}@media (max-width:640px){.zh-faq-section{margin-top:40px}.zh-faq-inner{padding:0}.zh-faq-section h2{font-size:1.45rem}}